Compatibilidade do tratamento de sementes de feijão-caupi com fungicidas e inoculação com estirpes de Bradyrhizobium

Neto, Manoel Luiz; Smiderle, Oscar José; Silva, Krisle da; Fernandes‐Júnior, Paulo Ivan; Xavier, Gustavo Ribeiro; Zilli, Jerri Édson

doi:10.1590/s0100-204x2013000100011

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…The efficiency of the treatments of seeds using chemical fungicides with active ingredients of Carbendazim+Thiram (CTS), Metalaxyl-M+Fludioxonil (CCF) and Carboxin+Thiram (CSC) are proven both for the improvement of physiological potential expression as sanitary for the safflower seeds. Silva Neto et al (2013) verified positive results in physiological potential of cowpea seeds (Vigna unguiculata L. Walp) treated with the same fungicides above mentioned.…”

Section: Journal Of Agricultural Studiesmentioning

confidence: 54%

Physiological and Sanitary Quality of Safflower Seeds Under Different Seed Treatments

Menegaes

Nunes

Bertagnolli

et al. 2019

JAS

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Safflower (Carthamus tinctorius L.) presents a high susceptibility for the attack of pathogens, resulting in low productivity of seeds. Thus, we aimed to evaluate the physiological and sanitary quality of safflower seeds submitted to different treatments. The experiment was conducted in the Floricultural Sector and in the Didactic and Seed Research Laboratory, in completely randomized design, with 4x9 (lots of seeds and treatment of seeds), with four repetitions. The lots of seeds were cultivated in the crop 2017/2018, the sowing occurred in the first fortnight of each season of the year (autumn, winter, spring and summer). After collected, the lots were stored in cold chamber with average degree of humidity of 9.0%. The treatments of seeds were constituted by: control, thermotherapy via humid heat, thermotherapy via dry heat, Trichoderma harzianum, chemical fungicide with active ingredients of Carbendazim+Thiram, Metalaxyl-M+Fludioxonil and Carboxin+Thiram, vegetal extracts of Dendranthema grandiflora and of Melia azedaeach. We evaluated the seeds treated by the standard test of germination, length and mass of seedlings, emergence and sanity. We observed that all the tested treatments benefit the safflower culture, promoting improvement in its germination, with efficient establishment of seedlings in the field. At the same time that was carried out the infestation control of the pathogens on the same, among the treatments we highlight the chemical fungicide with active ingredient Carbendazim+Thiram.

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Section: Journal Of Agricultural Studiesmentioning

confidence: 54%

Physiological and Sanitary Quality of Safflower Seeds Under Different Seed Treatments

Menegaes

Nunes

Bertagnolli

et al. 2019

JAS

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“…Consequently, the use of agrochemicals leads to a loss of abundance and diversity in the soil microbiome ( Rao et al., 2019 ), as well as of rhizobia ( Silva Neto et al., 2013 ; Weese et al., 2015 ), reducing plant nodulation and genetic diversity of strains. On the contrary, organic amendments, such as manure, a common practice in organic management, usually increase the abundance and diversity of microorganisms and rhizobia ( Rao et al., 2019 ; Li et al., 2022 ), promoting a greater plant nodulation ( Herencia et al., 2020 ), as in our results.…”

Section: Discussionmentioning

confidence: 99%

“…Unfortunately, conventional agriculture related practices such as the use of herbicides and fungicides have a negative effect on the soil microbiota survival and diversity, reducing the efficiency of symbiotic relationships ( Silva Neto et al., 2013 ; Da-Silveira-Cardillo et al., 2019 ; Rao et al., 2019 ). Additionally, the continued use of inorganic N-fertilizers causes the evolution of less-mutualistic rhizobia ( Heath and Tiffin, 2007 ; Weese et al., 2015 ; Rao et al., 2019 ), and the decrease of nodules production ( Heath et al., 2010 ; Regus et al., 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Conventional management has a greater negative impact on Phaseolus vulgaris L. rhizobia diversity and abundance than water scarcity

del-Canto,

Sanz-Saez,

Heath

et al. 2024

Front. Plant Sci.

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IntroductionDrought is one of the biggest problems for crop production and also affects the survival and persistence of soil rhizobia, which limits the establishment of efficient symbiosis and endangers the productivity of legumes, the main source of plant protein worldwide.AimSince the biodiversity can be altered by several factors including abiotic stresses or cultural practices, the objective of this research was to evaluate the effect of water availability, plant genotype and agricultural management on the presence, nodulation capacity and genotypic diversity of rhizobia.MethodA field experiment was conducted with twelve common bean genotypes under irrigation and rain-fed conditions, both in conventional and organic management. Estimation of the number of viable rhizobia present in soils was performed before the crop establishment, whereas the crop yield, nodule number and the strain diversity of bacteria present in nodules were determined at postharvest.ResultsRainfed conditions reduced the number of nodules and of isolated bacteria and their genetic diversity, although to a lesser extent than the agrochemical inputs related to conventional management. In addition, the effect of water scarcity on the conventional management soil was greater than observed under organic conditions.ConclusionsThe preservation of diversity will be a key factor to maintain crop production in the future, as problems caused by drought will be exacerbated by climate change and organic management can help to maintain the biodiversity of soil microbiota, a fundamental aspect for soil health and quality.

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Effect of fungicides on the symbiosis between Bradyrhizobium strains and peanut

Santos

Gondim

Fernandes‐Júnior

et al. 2021

Pesqui. Agropecu. Trop.

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Seed treatment with fungicides is an important practice for the control of phytopathogens in peanut crops. However, these products can harm rhizobacteria (Bradyrhizobium) and inhibit processes such as biological nitrogen fixation. This study aimed to verify the effects of the treatment of peanut seeds cv. BR1 inoculated with Bradyrhizobium spp. with fungicides. The experiment was conducted in a greenhouse, using two combinations of fungicides [C1: carboxin (200 g L-1) + tiram (200 g L-1); C2: pyraclostrobin (25 g L-1) + thiophanate methyl (225 g L-1) + fipronil (250 g L-1)] and one control without fungicide; two inoculants based on Bradyrhizobium spp. (SEMIA 6144 and ESA 123) and one control with a nitrogen chemical source (ammonium nitrate). The experimental design was completely randomized, in a 3 (2 with fungicide and 1 without fungicide) x 4 (2 inoculations based on rhizobia, 1 N mineral source and 1 without N) x 2 (1 or 2 inoculants applications) factorial scheme, with 5 replications. The root and shoot dry mass, plant height, nodulation and leaf nitrogen accumulation were evaluated. The application of both combinations reduced the number of nodules on plant roots, mainly for C1. The vegetative growth and nitrogen in the leaves were affected by C1, whereas, for C2, there were increments higher than for the control without fungicides. ESA 123 was more tolerant to the effects of fungicides on nodulation. Regarding the number of inoculations, there was an increase in the nitrogen rate with two inoculations. C2, despite affecting the nodulation, was less toxic to the inoculants SEMIA 6144 and ESA 123.

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Compatibilidade do tratamento de sementes de feijão-caupi com fungicidas e inoculação com estirpes de Bradyrhizobium

Cited by 7 publications

References 13 publications

Physiological and Sanitary Quality of Safflower Seeds Under Different Seed Treatments

Physiological and Sanitary Quality of Safflower Seeds Under Different Seed Treatments

Conventional management has a greater negative impact on Phaseolus vulgaris L. rhizobia diversity and abundance than water scarcity

Effect of fungicides on the symbiosis between Bradyrhizobium strains and peanut

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